RU93049649A - METHOD OF THERMAL TREATMENT OF USED ELBRORIZED BATHTUBS - Google Patents

METHOD OF THERMAL TREATMENT OF USED ELBRORIZED BATHTUBS

Info

Publication number
RU93049649A
RU93049649A RU93049649/26A RU93049649A RU93049649A RU 93049649 A RU93049649 A RU 93049649A RU 93049649/26 A RU93049649/26 A RU 93049649/26A RU 93049649 A RU93049649 A RU 93049649A RU 93049649 A RU93049649 A RU 93049649A
Authority
RU
Russia
Prior art keywords
gas stream
reactor
temperature
particles
compounds
Prior art date
Application number
RU93049649/26A
Other languages
Russian (ru)
Other versions
RU2103392C1 (en
Inventor
Баррийон Эрик
Бернар Персонне Пьер
Клод Бонтрон Жан
Ларонз Даниель
Original Assignee
Алюминиюм Пешинэ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR929209418A external-priority patent/FR2693928B1/en
Application filed by Алюминиюм Пешинэ filed Critical Алюминиюм Пешинэ
Publication of RU93049649A publication Critical patent/RU93049649A/en
Application granted granted Critical
Publication of RU2103392C1 publication Critical patent/RU2103392C1/en

Links

Claims (1)

Изобретение касается способа термической обработки размельченных набоек, образованных одновременно углеродистыми продуктами и силикоглиноземистыми продуктами, пропитанными неорганическими фтористыми соединениями в смеси с порошкообразной неорганической добавкой, способной при высокой температуре соединяться с или без плавления с пропитывающими фтористыми соединениями для образования новых устойчивых и нерастворимых соединений. Порошкообразная смесь вводится в верхнюю часть реактора в газовый поток при температуре, не превышающей 1100oС. После регулирования времени соприкосновения твердых частиц с газовым потоком так, чтобы температура частиц достигала 400 - 750oС в основании реактора перед их экстрагированием, температуру газового потока в основании реактора поддерживают на заданной величине путем выверения расхода порошкообразной смеси. На выходе из реактора после охлаждения газовый поток отделяют от частиц, образуя таким образом стабилизированный остаток, содержание выщелачиваемых цианидов в котором составляет меньше 0,0005%, а содержание выщелачиваемого фтора не превышает 0,2%.The invention relates to a method of heat treatment of crushed nabok, formed simultaneously with carbonaceous products and silicoaluminous products, impregnated with inorganic fluoride compounds in a mixture with a powdered inorganic additive, capable of combining with or without melting at high temperature with impregnating fluorine compounds to form new stable and insoluble compounds. The powder mixture is introduced into the upper part of the reactor into the gas stream at a temperature not exceeding 1100 o C. After adjusting the time of contact of the solid particles with the gas stream so that the temperature of the particles reaches 400-750 o C at the base of the reactor before they are extracted, the temperature of the gas stream the base of the reactor is maintained at a predetermined value by adjusting the flow rate of the powder mixture. At the exit from the reactor after cooling, the gas stream is separated from the particles, thus forming a stabilized residue, the content of leached cyanides in which is less than 0.0005%, and the content of leached fluorine does not exceed 0.2%.
RU93049649A 1992-07-24 1993-07-23 Method of thermally treating worked out packing of electrolysis baths of hall-heroult type RU2103392C1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9209418 1992-07-24
FR929209418A FR2693928B1 (en) 1992-07-24 1992-07-24 Process for the thermal treatment of spent pot lining from Hall-Héroult electrolysis tanks.

Publications (2)

Publication Number Publication Date
RU93049649A true RU93049649A (en) 1996-06-27
RU2103392C1 RU2103392C1 (en) 1998-01-27

Family

ID=9432432

Family Applications (1)

Application Number Title Priority Date Filing Date
RU93049649A RU2103392C1 (en) 1992-07-24 1993-07-23 Method of thermally treating worked out packing of electrolysis baths of hall-heroult type

Country Status (13)

Country Link
EP (1) EP0580533B1 (en)
AU (1) AU663390B2 (en)
BR (1) BR9302974A (en)
CA (1) CA2096484C (en)
DE (1) DE69300667T2 (en)
ES (1) ES2078812T3 (en)
FR (1) FR2693928B1 (en)
GR (1) GR3018134T3 (en)
IS (1) IS1764B (en)
NO (1) NO304776B1 (en)
NZ (1) NZ247985A (en)
RU (1) RU2103392C1 (en)
ZA (1) ZA935009B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5222448A (en) * 1992-04-13 1993-06-29 Columbia Ventures Corporation Plasma torch furnace processing of spent potliner from aluminum smelters
DE19807630A1 (en) 1998-02-23 1999-08-26 Bayer Ag Water-based composition useful for controlling parasitic insects and mites, especially lice, on humans
DE19900519A1 (en) 1999-01-08 2000-07-13 Bayer Ag Substituted guanidine derivatives
DE10140108A1 (en) 2001-08-16 2003-03-06 Bayer Cropscience Ag Fungicidal active ingredient combinations
EP1731037A1 (en) 2005-06-04 2006-12-13 Bayer CropScience AG Increase of stress tolerance by application of neonicotinoids on plants engineered to be stress tolerant
BRPI0613145A2 (en) 2005-06-15 2012-01-03 Bayer Bioscience Nv Methods to increase plant resistance to hypoxic conditions
EP1905302A1 (en) 2006-09-30 2008-04-02 Bayer CropScience AG Suspension concentrates
DE102007045956A1 (en) 2007-09-26 2009-04-09 Bayer Cropscience Ag Combination of active ingredients with insecticidal and acaricidal properties
EP2225940B1 (en) 2009-03-05 2014-03-12 GAT Microencapsulation GmbH Oil dispersions of nAChR binding neonicotinoids
CN104889134B (en) * 2015-05-13 2017-03-01 长春黄金研究院 A kind of gold mine cyanogen-containing tailing Slag treatment method
RU2683400C1 (en) * 2018-06-07 2019-03-28 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Method of processing a refractory part of a spreaded futer of an aluminum electrolyzer
CN109701989B (en) * 2018-12-24 2021-05-28 东北大学 Method for treating aluminum electrolysis waste cathode carbon blocks by using NaOH sub-molten salt

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444740A (en) * 1983-02-14 1984-04-24 Atlantic Richfield Company Method for the recovery of fluorides from spent aluminum potlining and the production of an environmentally safe waste residue
US4763585A (en) * 1987-09-08 1988-08-16 Ogden Environmental Services Method for the combustion of spent potlinings from the manufacture of aluminum
US4993323A (en) * 1988-09-08 1991-02-19 Tabery Ronald S Fluidized bed combustion of aluminum smelting waste
FR2664297B1 (en) * 1990-07-04 1992-09-11 Pechiney Aluminium PROCESS FOR THE TREATMENT BY THERMAL SHOCK OF USED BRAZZERS FROM HALL-HEROULT ELECTROLYSIS TANKS.
US5164174A (en) * 1991-10-11 1992-11-17 Reynolds Metals Company Detoxification of aluminum spent potliner by thermal treatment, lime slurry quench and post-kiln treatment

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